package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * 说明:
 *
 * @author: luohaowei
 * @date:2023/3/7
 **/
public class CopyDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis=new FileInputStream("wx.jpg");
        FileOutputStream fos=new FileOutputStream("wx_1.jpg");
        long start=System.currentTimeMillis();
        int d;
        while ((d=fis.read())!=-1){
            fos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完成"+(end-start)+"ms");
        fis.close();
        fos.close();
        /*
        FileInputStream fis=new fileInputStream("wx.jpg");
        FileOutputStream fos=new FileOutputStream("wx_1.jpg")
        long start=System.currentTimeMillis();
        int d;
        while((d=fis.raed())!=-1{
            fos.write(d);
        }
        long end=System.currentTimeMillis();
        System.out.println("复制完成"+(end-start)+"ms");
        fis.close();
        fos.close();
         */
    }
}
